Display Module

2. The display module as claimed in claim 1, wherein n3 is greater than n2, and n3 is greater than n1.

3. The display module as claimed in claim 2, wherein the refractive index of the reflection layer is less than the refractive index of the cover plate.

4. The display module as claimed in claim 1, wherein the reflection layer is in a phase of any one of solid, gas, or liquid.

5. The display module as claimed in claim 1, wherein the touch light source is disposed in the edge region, and the touch light source is disposed aligned with the cover plate in the edge region.

6. The display module as claimed in claim 5, wherein a first collimation component is disposed on a side of the touch light source facing toward the cover plate, and the first collimation component is configured to converge the light emitted from the touch light source.

7. The display module as claimed in claim 6, wherein the first collimation component is composed of at least one of a collimation grating or a prism structure.

8. The display module as claimed in claim 7, wherein the prism structure is a convex lens or a concave lens.

9. The display module as claimed in claim 6, wherein when the refractive index of the cover plate is 1.5, a light emission angle of the first collimation component is less than 42 degrees.

10. The display module as claimed in claim 6, wherein a refractive index of a manufacturing material of the first collimation component is greater than 1.6.

11. The display module as claimed in claim 6, wherein in the edge region, a light shielding layer is disposed on a lateral surface of the cover plate facing toward the touch light source, and the first grating is disposed on a lateral surface of the light shielding layer facing away from the cover plate.

12. The display module as claimed in claim 11, wherein the touch light source is a mini light emitting diode (mini-LED) light plate or a micro light emitting diode (micro-LED) light plate.

13. The display module as claimed in claim 12, wherein a width of a light plate of the touch light source is less than or equal to 0.6 millimeter.

14. The display module as claimed in claim 6, wherein a second collimation component is disposed on a side of the recognition component facing toward the cover plate.

15. The display module as claimed in claim 14, wherein the to-be-recognized terminal is a finger, and the recognition component is a fingerprint sensor.

16. The display module as claimed in claim 14, wherein the to-be-recognized terminal is a stylus pen.

17. The display module as claimed in claim 14, wherein the first collimation component is a first prism structure or a second grating, the second collimation component is a second prism structure or a third grating, and the first prism structure, the second prism structure, the second grating, and the third grating are configured to converge light.

18. The display module as claimed in claim 1, wherein the touch light source is an infrared light source.

19. The display module as claimed in claim 18, wherein a manufacturing material of a light shielding layer is black ink which enables infrared light to penetrate.